A notorious Japanese serial killer known as the “Black Widow” has died on death row while awaiting execution for poisoning multiple elderly men with cyanide to get nearly $9 million in inheritances. Chisako Kakashi,

Japanese death-row inmate Chisako Kakehi, dubbed the "Black Widow" after she used cyanide to kill her elderly lovers​, has died in a detention center at age 78, officials say,

A 78-year-old death inmate convicted of murdering her husband and two common-law partners with poison in western Japan more than a de

According to the reports, Kakehi had been sentenced to death after she had been convicted of the murder of three men including her husband. Kakehi was also convicted of the attemp